#pragma once

#include <time.h>

#define FD_SETSIZE 1024

typedef unsigned long fd_mask;

typedef struct
{
	unsigned long fds_bits[FD_SETSIZE / 8 / sizeof(long)];
} fd_set;

#define FD_ZERO(s)                                            \
	do                                                        \
	{                                                         \
		int __i;                                              \
		unsigned long *__b = (s)->fds_bits;                   \
		for (__i = sizeof(fd_set) / sizeof(long); __i; __i--) \
			*__b++ = 0;                                       \
	} while (0)

#define FD_SET(d, s) ((s)->fds_bits[(d) / (8 * sizeof(long))] |= (1UL << ((d) % (8 * sizeof(long)))))
#define FD_CLR(d, s) ((s)->fds_bits[(d) / (8 * sizeof(long))] &= ~(1UL << ((d) % (8 * sizeof(long)))))
#define FD_ISSET(d, s) !!((s)->fds_bits[(d) / (8 * sizeof(long))] & (1UL << ((d) % (8 * sizeof(long)))))

int select(int, fd_set *__restrict, fd_set *__restrict, fd_set *__restrict, struct timeval *__restrict);
